C# Program to Implement UDP

/*

 * C# Program to Implement UDP

 */

//SERVER SIDE PROGRAM

using System;

using System.Net;

using System.Net.Sockets;

using System.Text;

using System.Configuration;

class EmployeeUDPServer

{

    public static void Main()

    {

        UdpClient udpc = new UdpClient(2055);

        Console.WriteLine("Server started, servicing on port 2055");

        IPEndPoint ep = null;

        while (true)

        {

            byte[] rdata = udpc.Receive(ref ep);

            string name = Encoding.ASCII.GetString(rdata);

            string job = ConfigurationSettings.AppSettings[name];

            if (job == null) job = "No such employee";

            byte[] sdata = Encoding.ASCII.GetBytes(job);

            udpc.Send(sdata, sdata.Length, ep);

        }

    }

}//XML CODING

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

  <appSettings>

    <add key = "mickey" value="manager"/>

    <add key = "bob" value="tester"/>

    <add key = "tom" value="clerk"/>

    <add key = "jerry" value="manager"/>

  </appSettings>

</configuration>

//CLIENT SIDE PROGRAM

using System;

using System.Net;

using System.Net.Sockets;

using System.Text;

class EmployeeUDPClient

{

    public static void Main(string[] args)

    {

        UdpClient udpc = new UdpClient("Win7-PC", 2055);

        IPEndPoint ep = null;

        while (true)

        {

            Console.Write("Name: ");

            string name = Console.ReadLine();

            if (name == "") break;

            byte[] sdata = Encoding.ASCII.GetBytes(name);

            udpc.Send(sdata, sdata.Length);

            byte[] rdata = udpc.Receive(ref ep);

            string job = Encoding.ASCII.GetString(rdata);

            Console.WriteLine(job);

        }

    }

}